| A. | Lipids are generally water-soluble. |
| B. | Proteins are polypeptides |
| C. | Polysaccharides are long chains of sugars. |
| D. | Adenine and guanine are substituted pyrimidines. |
| E. | Almost all enzymes are proteins. |
| 1. | C, D and E only |
| 2. | B, C and E only |
| 3. | B, D and E only |
| 4. | A, B and C only |